say it: HAHY-lee
highly is an adverb meaning "to a high degree or extent; favorably or with much respect". It carries 3 recorded senses.
to a high degree or extent; favorably or with much respect
“highly successful”
“He spoke highly of her”
“does not think highly of his writing”
“extremely interesting”
at a high rate or wage
“highly paid workers”
in a high position or level or rank
“details known by only a few highly placed persons”
Definitions, synonyms and semantic relations for highly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.